Sylvania 12AU7 - black plates

This rare 1950s Sylvania 12AU7 tube has long shiny black plates with copper grid posts and a windmill getter. The green print on the glass has the Sylvania lightning logo (label may be partial/missing).

Tube tests as new and ships in a new white box.

This tube is sold individually. Photo is a sample from the lot. Matched pairs, when available, are listed as Item 1173.

The 1959 Sylvania 12AU7 tubes in this precisely matched pair are labeled for Conn or Baldwin organs. They have long gray plates with copper grid posts. Both tubes test as new with very low noise and are matched for Gm & mA.

The 1960s Sylvania 12AU7A tubes in this precisely matched pair were made in the USA. They have halo getters and long gray plates with copper grid posts. Both tubes test as new with very low noise. Click "more info" for current availability.

This early 1960s 12AU7A tube was made by Sylvania and labeled for Hammond or Baldwin organs. It has long gray plates with copper grid posts and a halo getter. Click "more info" for current availability.

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